While the language barrier was once an obstacle to trade,________

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions

Salmon lay their eggs and die in fresh water, although they live in salt water when most of their adult lives

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to the sentence given in each of the following questions

In the event that nuclear weapons being used, we are all doomed

Children usually turn to their parents rather than________for protection from threats in the environment

No matter how often I explain it, he doesn't seem to ________

After a short holiday, he________himself once more to his studies

Your pair of trousers________in the closet

The school year normally has three________, with exams at the end of the year